Question

QN 1
On a construction site, a point R is to be set out from a point S using a 50 m steel tape. The horizontal length of SR is designed as 35.000 m and it lies on a constant slope of 03°27'. During the setting out the steel tape is laid on the ground and pulled at a tension of 70 N, the mean temperature being l2°C. The tape was standardized as 40.983 m at 50 N tension and 20°C on a baseline of length 41.005 m. The coefficient of thermal expansion of the tape material is 0.000 011 2 per °C, Young's modulus is 200 kN mm-2 and the cross-sectional area of the tape is 2.4 mm2.
Calculate the length that should be set out on the tape along the direction SR to establish the exact position of point R.

Answer 1

Answer:

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